﻿// ----------------------------------------------------------------------------------
// Microsoft Developer & Platform Evangelism
// 
// Copyright (c) Microsoft Corporation. All rights reserved.
// 
// THIS CODE AND INFORMATION ARE PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND, 
// EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES 
// OF MERCHANTABILITY AND/OR FITNESS FOR A PARTICULAR PURPOSE.
// ----------------------------------------------------------------------------------
// The example companies, organizations, products, domain names,
// e-mail addresses, logos, people, places, and events depicted
// herein are fictitious.  No association with any real company,
// organization, product, domain name, email address, logo, person,
// places, or events is intended or should be inferred.
// ----------------------------------------------------------------------------------

namespace Microsoft.Samples.WindowsPhoneCloud.Phone.Helpers
{
    using System;
    using SL.Phone.Federation.Utilities;

    public static class Extensions
    {
        private const long ExpirationBuffer = 10;

        public static bool IsValid(this RequestSecurityTokenResponseStore rstrStore)
        {
            var epoch = (DateTime.UtcNow.Ticks - 621355968000000000) / 10000000;
            if ((rstrStore != null) && rstrStore.ContainsValidRequestSecurityTokenResponse())
            {
                return rstrStore.RequestSecurityTokenResponse.expires > epoch + ExpirationBuffer;
            }

            return false;
        }
    }
}